O
Optical Line Sensor
Sensor tracking contrast for auto steering.
Overhead Boom Lamp
Lamp fitted above the gully boom for visibility during night work. Improves accuracy when positioning the suction hose.
Open-Graded Aggregate
Porous aggregate mix encouraging binder penetration and retention.
Optical Wet Film Gauge
Gauge for wet film in transparent coatings.
Overhead Boom Mount
Structural mount supporting the gully-suction boom at roof level. Designed to pivot for stowage and includes a safety-locking pin.
Open-Nozzle Pattern
Fan shape of spray pattern with specific overlap.
Outgassing (Substrate)
Vapour release causing bubbles/voids under markings.
Overhead Clearance Alarm
Warns before tipping hopper under bridges or cables.
Oil-Cooler Thermostat
Valve regulating flow through the hydraulic-oil cooler. Keeps fluid within the 40–70 °C optimum temperature range for long component life.
Oil-Drain Safety Tray
Tray positioned beneath oil filters during draining. Captures hot oil safely and prevents environmental spills.
